Automobile electromagnetic specialty tool



Aug. 5, 1930. E. M. BARRY AUTOMOBILE ELECTROMAGNETIC SPECIALTY TOOLFiled Feb. 26, 1929 INVENTOR ERA/[$7 BARR Y ATTORNEY Patented Aug. 5,1930 UNITED STATES ERNEST M. BARRY, F MAYWOOD, CALIFORNIA AUTOMOBILEELECTROMAGNETIC SPECIALTY TOOL Application filed February 26, 1929.

In this specification, and the accompanying drawing, I shall describeand show a preferred form of my invention, and specifically mentioncertain of its more important objects. I do not limit myself to theforms disclosed, since various changes and adaptations may be madetherein without departing from the essence of my invention ashereinafter claimed; and objects and advantages, other than thosespecifically mentioned, are included within its scope.

My invention relates to tools and more particularly to a specialty toolof the electromagnetic type adapted for use in garages and principallyin conjunction with the maintenance and repair of automobiles, trucks,tractors and the like.

Among its more important objects are first, to provide a specialty toolhaving a flexible shank provided with a central bore and electricalconductor wires leading through the bore, which makes it articularlyadapted for removing valve keys rom valves, which eliminates danger ofdropping them in the crank case; also for removing nuts, washers, screwsand the like which drop in remote corners thereof; second, to mount onthe far end thereof a water-proof metal housing wherein is contained asingle pole electro-magnet having attached to its exposed end a movableor adjustable iron terminal fishing head; third, to provide in thedevice an electric circuit a variable resistance means included in thecircuit to accommodate itself to a range in voltage and a thumb switchto make and break the circuit; and fourth, to provide a specialty toolwhich is very simple and economical of construction, durable, easy tooptrate, efficient and willnot readily, deteriorate or get out of order.

With these and other objects in view as will appear hereinafter, myinvention consists of certain novel features of construction,combination and arrangement of parts and portions as will be hereinafterdescribed in detail Serial No. 342,880.

and particularly set forth in the appended claims. reference being hadto the accompanying drawing and to the characters of reference thereonwhich form a part of this application in which:

Fig. 1 is a perspective. view showing my improved tool being used toextracta lost nut from within the crank case of an engine.

Fig. 2 is a longitudinal mid-section thereof including in the view aresistance box.

Fig. 3 is a perspective view of a single pole magnet used as a fishinghead.

Fig. 4 is a perspective view of a double pole magnet used as a fishinghead, and b Fig. 5 is a wiring diagram of the resistance Referring indetail to the drawings, the tool comprises a preferably water-proofcylindrical metal housing 6 contain ng an electromagnet proper 7 whichprojects from said metal housing 6 through a reduced neck portion 8which is tightly fitted therearound. Over said magnet 7 is fitted aspool insulator 9 upon which is wound an induction coil 0. Said coil 10is energized through conductors 11, 11 and 12 which extend through theflexiblewater-proof shank 13. This flexible shank has one end fastenedwithin the other reduced neck portion 14 of housing 6, while the otherend of shank 13 is fastened within a neck 15 with which a bakelitehandle 16 is provided.

Said handle 16 has a bore 17 extending therethrough. Within said handle16 is mounted a thumb switch 18 indicated in said view in two positions;in one position its handle 19 is shown in full lines, positioned toclose the switch thus to complete the circuit through conductors 11 and11.

With the wires 11 and 11 is included in the circuit a variableresistance box 20, preferably of metal. Through said box extends a pin21 having at each outer side of said box a head 22. Upon said pin ismounted a fire proof cylinder 23 upon which is wound the resistance wire24. Wires 11 and 12 90 enter this resistance box through a rubberbushing or insulator and exit through a similar bushing insulator 26.Wire 11 terminates in a metal sliding shoe 27. Said shoe is mounted forlongitudinal adjustment upon a fiber insulator 28 which is, in 'turnsupported by the adjustable bolt 29 having an adjustable screw nut 30which is movable in the slot 31 of the cover plate 32. The arrangementjust described provides a device which can be accommodated to differentvoltages and therefore makes it possible to electrify the magnet eitherfrom a storage battery or from an electric light socket to be referredto later.

The completed circuit is delivered through the terminal wires 11 and 12to which are fastened the clamns 33 and 3a which are attachable to thepoles 39 and 40 of the battery B when desired.

Magnet- 7 carries an adiustable terminal iron fishing head or finger 35which is secured thereto by a pivot screw 36. In Fig. 4- is shown adouble pole magnet 7, each pole of which has a like adjustable finger 35pivot ally secured thereto at 36. These magnets should be laminated inthe same manner as the magnets of transformers. They are stronger andmore appropriate for city alternat ng current when thus constructed.

In Fig. 1 the device is shown in an operative position in the act ofwithdrawing a lost nut 37 from a crank case 38, it having its clamps 33and 34 attached to the poles 39 and 40 of the battery B. In dotted linesit is shown connected with a light socket 41.

In Fig. 5 is shown a wiring diagram of the resistance box, theconstruction of which, when viewed with the resistance box in Fig. 2, isquite obvious.

I claim:

1. In a device of the character described,

a flexible shank, a magnet carried thereby,

cnductors leading through said shank to energize said magnet, and anadjustable fishing head carried by the outer end of said magnet andforming one of the magnetic elements thereof, said fishing head beingattached to said magnet by a pivot screw whereby it is yieldinglymaintained in adjusted posltion.

2. In a specialty tool, a flexible shank, a magnet carried thereby,conductors leading through said shank to energize said magnet, a core,said core having a recessed extremity, carried by the outer end of saidcore, and a finger which forms one of the magnetic elements of saidmagnet, said finger having its inner end pivotally fastened withinsaidrecessed extremity the mounting of said finger providing sutficientfriction thereagainst to maintain it normally in the desired angularadjustment.

3. In a specialty tool, a flexible shank, a magnet having two limbscarried thereby,

jacent position.

ERNEST M. BARRY.

